2565923 has 4 divisors (see below), whose sum is σ = 2570568. Its totient is φ = 2561280.

The previous prime is 2565917. The next prime is 2565947. The reversal of 2565923 is 3295652.

2565923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2565923 - 2⁴ = 2565907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2565923.

It is not an unprimeable number, because it can be changed into a prime (2565023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1361 + ... + 2642.

It is an arithmetic number, because the mean of its divisors is an integer number (642642).

2^2565923 is an apocalyptic number.

2565923 is a deficient number, since it is larger than the sum of its proper divisors (4645).

2565923 is an equidigital number, since it uses as much as digits as its factorization.

2565923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4644.

The product of its digits is 16200, while the sum is 32.

The square root of 2565923 is about 1601.8498681212. The cubic root of 2565923 is about 136.9034964264.

The spelling of 2565923 in words is "two million, five hundred sixty-five thousand, nine hundred twenty-three".